The thermochromic ink used in the color-changing cup is an ink synthesized from biological materials that is non-toxic, pollution-free and harmless. Its principle is: temperature-sensitive materials are printed on the cup body. The materials used belong to thermosensitive materials, which can withstand high temperatures of 320°C. They are non-toxic, lead-free, and chromium-free and have passed standard tests such as the US FDA and European LFGB.
Cup specifications: The diameter is approximately 8 cm, and the height is approximately 9.5 cm. 11*13.5*16.5.
Net weight: 0.34 kg. With color box packaging, it is 0.4 kg.
Packaging: paper box.

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